改进的移动粒子半隐式法模拟楔形体入水砰击  

Research on water entry of wedge based on the improved MPS method with large eddy simulation

作　　者：余谦[1] 张怀新[1,2] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240 [2]上海交通大学海洋工程国家重点实验室,上海200240

出　　处：《海洋工程》2013年第6期9-15,90,共8页The Ocean Engineering

基　　金：国家自然科学基金资助项目(50979059)

摘　　要：移动粒子半隐式法(Moving-Particle Semi-Implicit Method,MPS)是一种新的基于拉格朗日(Lagrange)理念的无网格方法,适用于模拟自由液面的大变形和水流的喷射现象。用基于大涡模拟的改进MPS法首先模拟了矩形体的入水砰击,砰击压力的计算结果证明了这种方法的正确性,然后模拟了楔形体的匀速入水砰击,并与实验结果进行了对比,验证了大涡模拟改进MPS法在砰击问题中的适用性。The Moving-Particle Semi-Implicit （MPS） method is a fully Lagrangian mesh-free method which has the advantage in the simulation of the free surface flow. For the purpose of simulating the water entry of wedge, we combine the improved MPS method with large eddy simulation （LES） which can simulate the turbulence in the flow. To verify this method, we simulate the water entry impact of a plate first. Then we apply this improved MPS-LES method to the simulation of the water entry of wedge, The comparison between the numerical simulation and the experimental data is quite good.

关 键 词：改进的移动粒子半隐式(MPS)法 大涡模拟 楔形体 入水砰击 

分 类 号：O357.1[理学—流体力学]